Beetroot soup

Name: Beetroot soup
Prep time: 30 min
Cook time: 30 min
Total time: 1 h
Cuisine: Eastern European
Ingredients: 3-4 medium (apple-sized) beetroot (about 500-600g/1lb 2oz-1lb5oz, grated coarsely, or choped into small dice; 500g/1lb 2oz ripe tomatoes, halved; 1 clove garlic, chopped roughly; 1 medium onion, peeled and finely chopped; 2 tbsp olive or sunflower oil; 500ml/16½fl oz good strong stock (beef is best, but chicken or vegetable will do); salt and freshly ground black pepper; 125g/4oz real (i.e. Greek not Danish) feta cheese